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  • NGK IRIDIUM IX Spark Plugs 6509 (Pre-Gapped) - 2011-2017 F150/Mustang GT 5.0L

    $89.99 $72.00

    IRIDIUM IX (LTR6IX-11) 6509

    STOCK HEAT RANGE

    - SET OF 8 -

    ULTIMATE PERFORMANCE FOR 2011-2017 5.0L


    Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling.

    • Pre-gapped to .045"
    • Fine iridium tip ensures high durability and a consistently stable spark.
    • Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines.
    • Trivalent metal plating provides superior anti-corrosion and anti-seizing properties.
    • Outstanding acceleration, high fuel efficiency and durability.
    • Ultimate design, technology and performance.
    • Heat range 6.

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